Replace emails and common phone formats before you paste into ChatGPT. Supported card and API-key patterns are flagged for you to delete.

Type the names you want hidden and they get replaced too. The tool does not find names by itself.

Before you paste is a free browser tool for office workers to replace contact details and names they choose.

By Leverage AI. Published 20 October 2026. Updated 20 October 2026.

How do I use Before you paste?

Paste your text, add the names you want removed and scan. Edit the result, delete any flagged cards or keys, then review and copy. It uses pattern matching, with no language model.

Is your company OK with this kind of text going into an AI tool?

Text limits and matching rules

Up to 10,000 characters of plain text.

Card and key matching rules

This tool's matching rules, as of October 2026: cards with 13 to 19 digits that pass a Luhn checksum, joined with single spaces or hyphens, or without separators. Key shapes: OpenAI sk- and sk-proj- (20 or more following characters), Stripe sk_live_ and sk_test_ (16 or more), GitHub ghp_ (36) and github_pat_ (22 or more), and AWS AKIA or ASIA (16). The rules do not check other formats, passwords or confidential facts.

Your text stays in this browser tab. Nothing is uploaded.

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